title: Unusually large left atrial myxoma presenting with severe mitral valve obstruction symptoms.
mesh_terms: D000293:Adolescent; D018618:Echocardiography, Doppler, Color; D005260:Female; D006325:Heart Atria / Q000473:pathology / Q000601:surgery; D006338:Heart Neoplasms / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans; D008943:Mitral Valve / Q000000981:diagnostic imaging / Q000503:physiopathology*; D008944:Mitral Valve Insufficiency / Q000000981:diagnostic imaging / Q000209:etiology / Q000503:physiopathology*; D009232:Myxoma / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery; D012720:Severity of Illness Index